Chinese built turbofan and turbojet engines

WP-5 Built at the Liming Engine Manufacturing Corporation aka Shenyang Aero-Engine Factory. [5]



WP-5D   Produced by Xi'an (XAE)


WP-6 A copy of the Soviet Tumansky R-9BF-811 jet engine

    
Shenyang WP-7 Originally a Chinese copy of the Soviet Tumansky R-11-300 afterburning turbojet. Many upgrades and new variants have been developed from the basic engine.

WP-13A-II  Produced by Liming Aircraft Engine Company

Xian Qinling-2  Improved version of the WS-9

Shenyang WP-14 Kunlun  indigenous Chinese turbojet engine produced by Shenyang.[7]

Shenyang WS-10A Taihang      Indigenous T/W: 7.5 replacement for AL-31 and AL-31F

WS-12B Taishan  Heavier, improved WS-12

Guizhou WS-13 Taishan  Indigenous T/W: 7.8 upgrade for RD-93

Shenyang WS-15      Described by Russian sources as the "18-ton" thrust, T/W: 9-10 project possibly used to power new J-XX fighters.[13]

 There is a huge list of turbojet and turbofan engines that were produced by China that were basically knockoffs of Soviet counterparts and domestically designed engines that were produced in China. Japan does not have a history of producing aircraft engines whether they be knockoffs or indigenous. 

 Japan and israel are in the exact same boat. None of these countries even manufacture and deploy domestic aircrafts or aircraft engines. The entire israeli airfleet is just american aircrafts with israeli names attached to them.

Israeli Air Force

Aircraft	Origin	Type	Versions	In service (Aviationweek)	In service (INSS / IISS)	In service (Flightglobal)
Fighter aircraft
Boeing F-15 Eagle	United States	air superiority fighter	F-15A "Baz"	20[29]	27[30]	} 42[31]
			F-15C "Baz"	11[29]	17[30]
			F-15B "Baz"	6[29]	7[30]	} 16[31]
			F-15D "Baz"	6[29]	11[30]
Boeing F-15E Strike Eagle	United States	strike fighter	F-15I "Ra'am"	25[29]	25[30]	25[31]
General Dynamics F-16 Fighting Falcon	United States	mulitirole fighter	F-16A "Netz"	59[29]	90[30]	} 149[31]
			F-16B "Netz"	14[29]	16[30]
			F-16D "Barak"	48[29]	49[30]
			F-16C "Barak"	78[29]	52[30]	76[31]
			F-16I "Sufa"	87[29]	101[32]	100[31]

 The netz, the barak, the sufa, the raam, the baz. They are just f16s and f15s.

  Of course its going to be difficult for Japan. First, they have to develop a domestically designed airframe, and then they have to manufacture a domestically designed turbofan engine. Both of which they have little experience in doing. In then end, they are still going to have to use a foreign engine to power their airframe. And use foreign weapon systems and avionics as well. Alecto, you need to try to stop insulting people with your stupidity and recognize that you are simply wrong. The idea that Japan can just produce a stealth airframe and a domestic turbofan to compliment is just not going to happen. Not anymore likely that israel will ever have an actual israeli airforce. In both cases of israel and Japan, their airforce's are so foreign, they might as well just rename their airforces' usaf. Without american airframes and american propulsion systems, israel would return to the bronze age. Japan would be installing propellers on f16s.